Fuse lock-out assembly for a battery pack

ABSTRACT

A fuse lock-out assembly for a battery pack is provided. The assembly includes a first housing having an interior region holding a manual service disconnect lower housing and a manual service disconnect upper housing therein. The assembly further includes a fuse holding housing coupled to the first housing that has a first fuse compartment holding a first fuse therein. The assembly further includes a slidable door that slides from a first operational position to a second operational position. The slidable door covers an open end of the first fuse compartment at the first operational position, and extends over a portion of the manual service disconnect lower housing at the second operational position only if the manual service disconnect upper housing is previously de-coupled from the lower housing.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to U.S. Provisional Patent ApplicationNo. 61/863,587 filed on Aug. 8, 2013, the entire contents of which arehereby incorporated by reference herein.

BACKGROUND

The inventors herein have recognized a need for a battery pack thatprevents access to battery pack fuses when a manual service disconnectis electrically coupling battery modules together within the batterypack.

SUMMARY

A fuse lock-out assembly for a battery pack in accordance with anexemplary embodiment is provided. The fuse lock-out assembly includes afirst housing having an interior region configured to hold a manualservice disconnect lower housing and a manual service disconnect upperhousing therein. The fuse lock-out assembly further includes a fuseholding housing coupled to the first housing. The fuse holding housinghas a first fuse compartment configured to hold a first fuse therein.The fuse lock-out assembly further includes a slidable door slidablycoupled to the first housing. The slidable door is configured to slidefrom a first operational position to a second operational position. Theslidable door is configured to cover an open end of the first fusecompartment at the first operational position to prevent the first fusefrom being removed from the first fuse compartment. The slidable door isfurther configured to extend over a portion of the manual servicedisconnect lower housing at the second operational position only if themanual service disconnect upper housing is previously de-coupled fromthe manual service disconnect lower housing. The slidable door isfurther configured to not cover the open end of the first fusecompartment at the second operational position.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic of an electrical vehicle having a battery packwith a fuse lock-out assembly in accordance with an exemplaryembodiment;

FIG. 2 is a schematic of the battery pack having a fuse lock-outassembly in accordance with an exemplary embodiment;

FIG. 3 is a cross-sectional schematic of the battery pack of FIG. 2;

FIG. 4 is a schematic of the fuse lock-out assembly of FIG. 2 having amanual service disconnect upper housing de-coupled therefrom, and havinga slidable door in a first operational position covering fusecompartments;

FIG. 5 is another schematic of the fuse-lock-out assembly of FIG. 2having the slidable door in a second operational position in which fusecompartments are accessible;

FIG. 6 is another schematic of the fuse-lock-out assembly of FIG. 2;

FIG. 7 is an enlarged schematic of a portion of the fuse-lock-outassembly of FIG. 2 having a slidable door in a first operationalposition covering fuse compartments;

FIG. 8 is another enlarged schematic of a portion of the fuse-lock-outassembly of FIG. 2 having a slidable door in a first operationalposition covering fuse compartments;

FIG. 9 is a top view of the fuse lock-out assembly of FIG. 2 having thesliding door in the second operational position in which the fusecompartments are accessible;

FIG. 10 is a schematic of the fuse lock-out assembly of FIG. 2 withoutthe slidable door being shown;

FIG. 11 is a schematic of a housing utilized in the fuse lock-outassembly of FIG. 2;

FIG. 12 is a schematic of a fuse holding housing utilized in the fuselock-out assembly of FIG. 2;

FIG. 13 is a schematic of a guide plate utilized in the fuse lock-outassembly of FIG. 2;

FIG. 14 is another schematic of the guide plate of FIG. 13;

FIG. 15 is a schematic of a slidable door utilized in the fuse lock-outassembly of FIG. 2;

FIG. 16 is another schematic of the slidable door of FIG. 15;

FIG. 17 is a cross-sectional schematic of a portion of the fuse lock-outassembly of FIG. 2;

FIG. 18 is an enlarged schematic of a portion of the fuse lock-outassembly of FIG. 2 having a first stopping member configured to stopmovement of the slidable door at the second operational position; and

FIG. 19 is an enlarged schematic of a portion of the fuse lock-outassembly of FIG. 2 having a second stopping member configured to stopmovement of the slidable door at the second operational position.

DETAILED DESCRIPTION

Referring to FIGS. 1 and 2, an electric vehicle 4 is illustrated. Theelectric vehicle 4 includes a battery pack 10, a vehicle electricalsystem 11, auxiliary loads 12, 13, and a computer 14.

Referring to FIGS. 1-5, the battery pack 10 in accordance with anexemplary embodiment provides electrical power to the vehicle electricalsystem 11, and the auxiliary loads 12, 13. The battery pack 10 includesa lower housing portion 20, an upper housing portion 30, battery modules40, 42, a manual service disconnect 48, contactors 52, 53, and a fuselock-out assembly 50 in accordance with an exemplary embodiment. Anadvantage of the battery pack 10 is the battery pack 10 utilizes thefuse lock-out assembly 50 with a slidable door 120 (shown in FIG. 4)that prevents access to fuse compartments unless an upper housing 62 ofthe manual service disconnect 48 is removed from the fuse lock-outassembly 50. For purposes of understanding, a fuse is “accessible” ifthe fuse can be removed from a fuse compartment by an operator ordisposed into the fuse compartment by the operator.

Referring to FIG. 1, the contactor 52 is electrically coupled betweenthe node 54 and the battery module 40. Further, the battery module 40 iselectrically coupled in series between the contactor 52 and the fuse 63of the manual service disconnect 48. Also, the battery module 42 iselectrically coupled between the fuse 63 of the manual servicedisconnect 48 and the contactor 53. The contactor 53 is electricallycoupled in series between the battery module 42 and the node 55. Thevehicle electrical system 11 is electrically coupled between the nodes54, 55. When the contactors 52, 53 have a closed operational position inresponse to control signals from the computer 14, and the fuse 63 has anon-blown state and is in series with the battery modules 40, 42, anoperational voltage from the battery modules 40, 42 is applied to thevehicle electrical system 11. Also, when the contactors 52, 53 have aclosed operational position in response to control signals from thecomputer 14, and the fuses 104, 106 each have a non-blown state, anoperational voltage from the battery modules 40, 42 is applied to theauxiliary loads 12, 13.

It is noted that if the manual service disconnect upper housing 62having the fuse 63 is removed from the battery pack 10 by an operator,the operational voltage supplied by the battery modules 40, 42 to a loadis reduced by one-half.

Referring to FIGS. 1 and 2, the upper housing portion 30 is configuredto be coupled to the lower housing portion 20. The lower housing portion20 is configured to hold the battery modules 40, 42 and the fuselock-out assembly 50 thereon. The upper housing portion 30 and the lowerhousing portion 20 define an interior region configured to hold thebattery modules 40, 42 therein. The upper housing portion 30 has anaperture extending therethrough in which a portion of the fuse lock-outassembly 50 extends therethrough. In one exemplary embodiment, the upperhousing portion 30 and the lower housing portion 20 are constructed ofsteel. Of course, in an alternative embodiment, the upper housingportion 30 and the lower housing portion 20 could be constructed ofother materials such as aluminum or plastic for example.

Referring to FIG. 1, the battery modules 40, 42 are configured to beelectrically coupled in series with the fuse 63 of the manual servicedisconnect 48 and the contactors 52, 53. In one exemplary embodiment,the battery modules 40, 42 are lithium-ion battery modules. Of course,in an alternative embodiment, the battery modules 40, 42 could be otherbattery modules such as nickel-metal hydride battery modules forexample.

Referring to FIGS. 1-3, the manual service disconnect 48 is configuredto selectively electrically to couple the battery modules 40, 42 to eachother, and to electrically de-couple the battery modules 40, 42 fromeach other as described in greater detail below. The manual servicedisconnect assembly 48 has the manual service disconnect lower housing60, the manual service disconnect upper housing 62, and the fuse 63disposed in the upper housing 62. The upper housing 62 is configured tobe removably coupled to the lower housing 60. A portion of the lowerhousing 60 (shown in FIG. 6) is disposed through a central aperture 252(shown in FIG. 11) of the housing 100. The lower housing 60 is coupledto a bottom plate 250 (shown in FIG. 11) of the housing 100 utilizingbolts 150, 152, 154, 156 and corresponding nuts disposed thereon. Thebolts 150, 152, 154, 156 extend through washers (not shown) which aredisposed on a top surface of the bottom plate 250, and the bottom plate250, and a portion of the lower housing 60. Corresponding nuts arecoupled to the bolts 150-156 proximate to a bottom surface of the lowerhousing 60. When the upper housing 62 is coupled to the lower housing60, the battery modules 40, 42 are electrically coupled together.Alternately, when the upper housing 62 is de-coupled from the lowerhousing 60, the battery modules 40, 42 are electrically de-coupled fromone another.

Referring to FIGS. 1, 4-6 and 17, the fuse lock-out assembly 50 utilizesa slidable door 120 that prevents access to fuse compartments in thefuse holding housing 102 (shown in FIG. 17) unless the manual servicedisconnect upper housing 60 is de-coupled from the manual servicedisconnect lower housing 62. The fuse lock-out assembly 50 includes ahousing 100, the fuse holding housing 102, a guide plate 110, theslidable door 120, a bracket 130, a gasket 142, bolts 150, 152, 154, 156and bolts 160, 162, 164, 166.

Referring to FIGS. 4, 5 and 11, the housing 100 is configured to holdthe manual service disconnect 48 therein. The housing 100 is furtherconfigured to hold the fuse holding housing 102, the guide plate 110,and the slidable door 120 thereon. The housing 100 includes a tubportion 200, a plate portion 204, and flange portions 206, 208, 210.

The tub portion 200 defines an interior region 214 (shown in FIG. 5)configured to hold the manual service disconnect lower housing 60 andthe manual service disconnect upper housing 62 therein. The tub portion200 has side walls 230, 232, 234, 236 and a bottom plate 250 coupled tothe side walls 230, 232, 234, 236. The tub portion 200 has an open endopposite to the bottom plate 250. The bottom plate 250 has a centralaperture 252 extending therethrough configured to receive a portion ofthe manual service disconnect lower housing 60 therethrough. Referringto FIGS. 6 and 11, the bottom plate further includes apertures 260, 262,264, 266 extending therethrough that are configured to receive the bolts160, 162, 164, 166 therethrough, respectively.

The plate portion 204 extends outwardly from a peripheral edge of thetub portion 200 proximate to an open end of the tub portion 200. Theplate portion 204 has a first side 270 and a second side 272 and hasapertures 280, 282 extending therethrough. The apertures 280, 282communicate with the fuse compartments 300, 302 of the fuse holdinghousing 102.

Referring to FIGS. 2 and 11, the flange portion 206 extends outwardlyfrom an edge 274 of the plate portion 204, and further extends from theside wall 230 of the tub portion 200. The flange portion 208 extendsoutwardly from the side wall 232 of the tub portion 200. The flangeportion 210 extends outwardly from an edge 276 of the plate portion 204,and further extends from the side wall 234 of the tub portion 200. Theflange portions 206, 208, 210 are coupled to a top surface of the upperhousing portion 30.

Referring to FIGS. 1, 4-6 and 12, the fuse holding housing 102 isconfigured to hold the fuses 104, 106 therein. The fuse holding housing102 includes fuse compartments 300, 302 (shown in FIG. 5) and aperipheral flange 304 extending around a periphery of open ends of thefuse compartments 300, 302. The fuse compartments 300, 302 areconfigured to hold the fuses 104, 106, respectively, therein and aredisposed between the guide portions 330, 332 of the guide plate 110. Thefuse compartment 300 may include first and second electrical adaptersthat are coupled to ends of the fuse 104. Further, the fuse compartment302 may include first and second electrical adapters that are coupled toends of the fuse 106. Further, in the fuse compartment 300, electricalcables may extend from the first and second electrical adapters throughapertures in the fuse compartment 300. Also, in the fuse compartment302, electrical cables may extend from the first and second electricaladapters through apertures in the fuse compartment 302. Referring toFIG. 6, the peripheral flange 304 is coupled to the second side 272 ofthe housing 100. Referring to FIGS. 11 and 12, the fuse compartment 300communicates with the aperture 280 in the plate portion 204 of thehousing 100. Further, the fuse compartment 302 communicates with theaperture 282 in the plate portion 204 of the housing 100. In oneexemplary embodiment, the fuse holding housing 102 is constructed ofplastic. Of course, in an alternative embodiment, the fuse holdinghousing 102 could be constructed of other materials.

Referring to FIGS. 5, 13, 14, 18 and 19, the guide plate 110 isconfigured to guide movement of the slidable door 120 relative to thehousing 100. The guide plate 110 includes guide portions 330, 332, andflange portions 340, 342, 344. The guide portions 330, 332 extendsubstantially parallel to one another. The flange portion 342 extendsbetween the end portions of the guide portions 330, 332. The flangeportion 340 is coupled to the guide portion 330 and extends generallyparallel to the guide portion 330. The flange portion 344 is coupled tothe guide portion 332 and extends generally parallel to the guideportion 332. The flange portions 340, 342, 344 are coupled to the plateportion 204 of the housing 100. In one exemplary embodiment, the guideplate 110 is constructed of steel. Of course, in an alternativeembodiment, the guide plate 110 could be constructed of other materials,such as plastic of aluminum for example.

Referring to FIGS. 13, 14 and 17, the guide portion 330 and the plateportion 204 of the housing 100 define a gap G1 therebetween. The gap G1is configured to receive a portion of the slidable door 120 therein. Theguide portion 330 includes a stopping member 350 that extends into thegap G1. When the slidable door 120 is at the second operational position(shown in FIG. 5) and the fuses 104, 106 are accessible to an operator,the stopping member 350 abuts against a stopping surface 416 (shown inFIGS. 18 and 25) of an edge portion 410 of the slidable door 120. Thestopping member 350 prevents the slidable door 120 from being slidablyremoved from the fuse lock-out assembly 50. Alternately, when theslidable door 120 is at the first operational position (shown in FIG. 4)and the fuses 104, 106 are not accessible to an operator, the stoppingmember 350 abuts against a stopping surface 417 (shown in FIG. 15) of anedge portion 412 of the slidable door 120.

The guide portion 332 and the plate portion 204 of the housing 100define a gap therebetween. The gap between the guide portion 332 and theplate portion 204 is configured to receive a portion of the slidabledoor 120 therein. The guide portion 332 includes a stopping member 352that extends into the gap. When the slidable door 120 is at the secondoperational position and the fuses 104, 106 are accessible to anoperator, the stopping member 352 abuts against a stopping surface 426(shown in FIGS. 15 and 19) of an edge portion 420 of the slidable door120. The stopping member 350 prevents the slidable door 120 from beingslidably removed from the fuse lock-out assembly 50. Alternately, whenthe slidable door 120 is at the first operational position and the fuses104, 106 are not accessible to an operator, the stopping member 352abuts against a stopping surface 427 (shown in FIG. 15) of an edgeportion 422 of the slidable door 120.

Referring to FIGS. 15-19, the slidable door 120 is at least partiallydisposed within the gap G1 and the gap between the guide portion 332 andthe plate portion 204. The slidable door 120 is configured to slide froma first operational position (shown in FIG. 4) to a second operationalposition (shown in FIG. 5) and vice versa. The slidable door 120 isconfigured to cover an open end of the fuse compartments 300, 302 at thefirst operational position to prevent the fuses 104, 106 from beingremoved from the fuse compartments 300, 302, respectively. The slidabledoor 120 is further configured to extend over a portion of the manualservice disconnect lower housing 60 at the second operational positiononly if the manual service disconnect upper housing 62 is previouslyde-coupled from the manual service disconnect lower housing 60. Theslidable door 120 is further configured to not cover the open end of thefuse compartments 300, 302 at the second operational position such thatthe fuses 104, 106 are accessible to an operator. In other words, theslidable door 120 is configured to allow an operator to access the fuses104, 106 only when the manual service disconnect upper housing 62 isremoved from the fuse lockout assembly 50 and the slidable door 120 isat the second operational position.

When the slidable door 120 is slid from the first operational positionat least partially into the interior region 214, the slidable door 120is configured to abut against the manual service disconnect upperhousing 62 if the manual service disconnect upper housing 162 is coupledto the manual service disconnect lower housing 160 in the interiorregion 214, such that the slidable door 120 cannot extend to the secondoperational position. Further, the slidable door 120 at least partiallycovers the open end of the fuse compartments 300, 302 when the slidabledoor 120 is disposed between the first and second operational positionssuch that the fuses 104, 106 are not accessible by an operator. Also,the slidable door 120 at the first operational position does notinterfere with the manual service disconnect upper housing 62 beingde-coupled from the manual service disconnect lower housing 60 in theinterior region 214.

The slidable door 120 has a plate portion 400, a plate portion 402, anda gasket 403. The plate portion 402 extends from an end of the plateportion 400 and is substantially perpendicular to the plate portion 400.The plate portion 400 has a first side 405 and a second side 406. Theplate portion 400 further includes edge portions 410, 412 and a groove414 extending between the edge portions 410, 412. The plate portion 400further includes edge portions 420, 422 and a groove 424 extendingbetween the end portions 420, 422. The plate portion 400 furtherincludes raised portions 430, 432, 434, 436 extending upwardly from thesecond side 406, and a top indentation 440 extending downwardly from thefirst side 405. The gasket 403 is coupled to the first side 405 and isgenerally rectangular ring-shaped. The gasket 403 has a central openingthat receives the top indentation 440 therein. The gasket 403 isconfigured to contact the plate portion 204 of the housing 100 aroundthe open ends of the fuse compartments 300, 302 when the slidable door120 is at the first operational position to provide a fluid-tight sealaround the open ends of the fuse compartments 300, 302. The gasket 403is constructed of an elastomeric material.

The edge portions 410, 412 of the slidable door 120 are slidablyreceived within the gap G1 between the plate portion 204 and the guideportion 330. Also, the edge portions 420, 422 are received within a gapbetween the plate portion 204 and the guide portion 332.

The edge portion 410 includes a stopping surface 416 configured to abutagainst the stopping member 350 (shown in FIG. 13) when the slidabledoor 120 is at the second operational position. Further, the edgeportion 412 includes a stopping surface 417 configured to abut againstthe stopping member 350 when the slidable door 120 is at the firstoperational position.

The edge portion 420 includes a stopping surface 426 configured to abutagainst the stopping member 352 (shown in FIG. 13) when the slidabledoor 120 is at the second operational position. Further, the edgeportion 422 includes a stopping surface 427 configured to abut againstthe stopping member 352 when the slidable door 120 is at the firstoperational position.

The raised portions 430, 432, 434, 436 are configured to contact abottom surface 441 (shown in FIG. 17) of the guide plate 110. The raisedportions 430, 432, 434, 436 urge the gasket 403 of the slidable door 120downwardly to seal against the plate portion 204 of the housing 100 whenthe slidable door 120 is at the first operational position. The topindentation 440 extends longitudinally across the slidable door 120 andprovides additional rigidity to the slidable door 120.

Referring to FIGS. 7 and 15, the plate portion 402 include apertures450, 452 extending therethrough for receiving bolts 453, 454,respectively, therethrough. The bolts 453, 454 are configured to couplethe slidable door 120 to the tub portion 200 at the first operationalposition. It should be noted that the bolts 453, 454 are removed fromthe apertures 450, 452 allow an operator to move the slidable door 120from the first operational position to the second operational position.

Referring to FIGS. 3, 4, 6 and 11, the mounting bracket 130 is coupledto the bottom plate 250 of the tub portion 200, and is further coupledto the lower housing portion 20. The mounting bracket includes legportions 500, 502, a plate portion 504, and flange portions 506, 508.The leg portions 500, 502 extend downwardly from opposite ends of theplate portion 504. The flange portion 506 extends outwardly from the legportion 500 and is configured to be coupled to the lower housing portion20. Also, the flange portion 508 extends outwardly from the leg portion502 and is configured to be coupled to the lower housing portion 20. Theplate portion 504 includes apertures extending therethrough forreceiving the bolts 150, 152, 154, 156, 160, 162, 164, 166 therethrough.The bolts 160, 162, 164, 166 are configured to couple the plate portion504 to the bottom plate 250 of the tub portion 200. In one exemplaryembodiment, the mounting bracket 130 is constructed of steel. Of course,in an alternative embodiment, the mounting bracket 130 could beconstructed of another material, such as plastic or aluminum forexample.

The fuse lock-out assembly provides a substantial advantage over otherassemblies. In particular, fuse lock-out assembly 50 provides atechnical advantage of utilizing with the slidable door 120 thatprevents access to fuse compartments unless a lower housing 60 of themanual service disconnect 48 is removed from the fuse lock-out assembly50.

While the claimed invention has been described in detail in connectionwith only a limited number of embodiments, it should be readilyunderstood that the invention is not limited to such disclosedembodiments. Rather, the claimed invention can be modified toincorporate any number of variations, alterations, substitutions orequivalent arrangements not heretofore described, but which arecommensurate with the spirit and scope of the invention. Additionally,while various embodiments of the claimed invention have been described,it is to be understood that aspects of the invention may include onlysome of the described embodiments. Accordingly, the claimed invention isnot to be seen as limited by the foregoing description.

What is claimed is:
 1. A fuse lock-out assembly for a battery pack,comprising: a first housing having an interior region configured to holda manual service disconnect lower housing and a manual servicedisconnect upper housing therein; a fuse holding housing coupled to thefirst housing, the fuse holding housing having a first fuse compartmentconfigured to hold a first fuse therein; a slidable door being slidablycoupled to the first housing, the slidable door configured to slide froma first operational position to a second operational position; theslidable door configured to cover an open end of the first fusecompartment at the first operational position to prevent the first fusefrom being removed from the first fuse compartment; and the slidabledoor further configured to extend over a portion of the manual servicedisconnect lower housing at the second operational position only if themanual service disconnect upper housing is previously de-coupled fromthe manual service disconnect lower housing, the slidable door furtherconfigured to not cover the open end of the first fuse compartment atthe second operational position.
 2. The fuse lock-out assembly of claim1, wherein the slidable door at the first operational position does notinterfere with the manual service disconnect upper housing beingde-coupled from the manual service disconnect lower housing in theinterior region.
 3. The fuse lock-out assembly of claim 1, wherein whenthe slidable door is slidable from the first operational position atleast partially into the interior region, the slidable door isconfigured to abut against the manual service disconnect upper housingif the manual service disconnect upper housing is coupled to the manualservice disconnect lower housing in the interior region, such that theslidable door cannot extend to the second operational position.
 4. Thefuse lock-out assembly of claim 3, wherein the slidable door at leastpartially covers the open end of the first fuse compartment when theslidable door is disposed between the first and second operationalpositions such that the first fuse is not accessible.
 5. The fuselock-out assembly of claim 1, wherein the first housing has a tubportion and a plate portion, the plate portion extending outwardly froma peripheral edge of the tub portion proximate to an open end of the tubportion, the tub portion defining the interior region that is configuredto hold the manual service disconnect lower housing and the manualservice disconnect upper housing therein, the plate portion having afirst side and a second side and having a first aperture extendingtherethrough.
 6. The fuse lock-out assembly of claim 5, furthercomprising a mounting bracket coupled to a bottom plate of the tubportion.
 7. The fuse lock-out assembly of claim 5, wherein a width ofthe slidable door is less than width of the interior region of the tubportion.
 8. The fuse lock-out assembly of claim 5, wherein the fuseholding housing is coupled to the second side of the plate portion ofthe first housing, the fuse holding housing having the first fusecompartment communicating with the first aperture in the plate portionof the first housing.
 9. The fuse lock-out assembly of claim 8, furthercomprising a guide plate coupled to the first side of the plate portionof the first housing, the guide plate having first and second guideportions, the first fuse compartment being disposed between the firstand second guide portions, the first guide portion and the plate portionhaving a first gap therebetween, the second guide portion and the plateportion having a second gap therebetween.
 10. The fuse lock-out assemblyof claim 9, wherein the slidable door is at least partially disposedwithin the first and second gaps.
 11. The fuse lock-out assembly ofclaim 9, wherein the fuse holding housing further includes a second fusecompartment configured to hold a second fuse therein and being disposedbetween the first and second guide portions, the plate portion furtherhaving a second aperture extending therethrough, the second fusecompartment communicating with the second aperture; and the slidabledoor further configured to cover an open end of the second fusecompartment at the first operational position to prevent the second fusefrom being removed from the second fuse compartment.
 12. The fuselock-out assembly of claim 9, wherein the first guide portion has afirst stopping member extending downwardly therefrom and into the firstgap, the slidable door having a first edge portion that is configured tocontact the first stopping member when the slidable door is at thesecond operational position.
 13. The fuse lock-out assembly of claim 12,wherein the first stopping member prevents the slidable door from beingslidably removed from the fuse lock-out assembly.
 14. The fuse lock-outassembly of claim 12, wherein the second guide portion has a secondstopping member extending downwardly therefrom and into the second gap,the slidable door having a second edge portion that is configured tocontact the second stopping member when the slidable door is at thesecond operational position.
 15. The fuse lock-out assembly of claim 1,wherein the manual service disconnect upper housing is removably coupledto the manual service disconnect lower housing.